Ammonium Polyphosphate (APP)

• Chemical Formula: (NH₄PO₃) n 

• Appearance: Clear liquid or white powder/granules (depending on the form) 

• P₂O₅ Content: 10% to 61% (varies with grade) 

• Nitrogen (N): Up to 11% 

• pH (1% solution): 6.0 to 7.5 

• Solubility: Completely soluble in water 

• Heavy Metals: Below permissible limits 

• Conductivity: Moderate, suitable for fertigation and foliar spray 

1. Slow-Release Phosphorus: Ammonium Polyphosphate releases phosphorus gradually, ensuring long-term nutrient availability to the crop, particularly during the early and mid-stages of growth.  
2. Enhanced Root Development: Phosphorus is vital for robust root architecture. APP supports early root establishment, enabling crops to absorb water and nutrients more efficiently. 
3. Improved Flowering and Fruit Set: Adequate phosphorus enhances reproductive development in crops, leading to better flowering and fruit setting, especially in fruiting and flowering crops like grapes, tomatoes, and cotton. 
4. Reduces Nutrient Loss: Its polymeric structure makes APP less prone to leaching and fixation in the soil, increasing nutrient use efficiency. 
5. Compatible with Fertigation Systems: Due to its high solubility and clear solution form, APP is widely used in drip and sprinkler irrigation without clogging systems. 
6. Boosts Energy Transfer in Plants: Phosphorus plays a key role in energy-related functions such as ATP synthesis, which is crucial for overall plant metabolism and growth. 
7. Improves Stress Resistance: Regular application of APP improves plant tolerance to environmental stress such as drought or nutrient deficiency. 
8. Multi-Crop Utility: Effective across a wide range of crops, including cereals, vegetables, fruits, pulses, and oilseeds. 
9. Balanced Nitrogen and Phosphorus: The presence of nitrogen in APP enhances early vegetative growth, complementing phosphorus’s role. 
10. Environmentally Sustainable: Lower fixation and controlled release mean reduced application frequency and minimal environmental runoff. 

• Method: Can be applied through fertigation, soil drenching, basal application, or foliar spray depending on crop and growth stage. 

• Dosage (may vary as per formulation and crop): 

• Fertigation: 5–10 kg/acre 

• Foliar Spray: 2–4 g/litre of water 

• Soil Drenching: 10–15 kg/acre 

• Recommended Crops: Vegetables (tomato, chili, brinjal), fruits (grapes, citrus, mango), cereals (wheat, maize, rice), pulses, cotton, and floriculture crops. 

• Ideal to apply Ammonium Polyphosphate during the early vegetative stage to boost root development. 

• Additional applications can be made during pre-flowering and fruit-setting stages to support reproductive growth. 

• For long-duration crops, split applications ensure sustained nutrient availability.

• Always conduct a jar test before mixing with other agrochemicals. 

• Do not exceed of Ammonium Polyphosphate recommended dosage to avoid salt stress on plants. 

• Store Ammonium Polyphosphate in a cool, dry place away from direct sunlight. 

• Keep out ammonium polyphosphate of reach of children and animals. 

• Wear protective gloves and avoid inhalation or contact with skin/eyes during handling. 

• Available in liquid form: 1 L, 5 L, 10 L, 20 L HDPE containers. 

• Available in granular/powder form: 1 kg, 5 kg, 10 kg, and 25 kg laminated bags. 

• Custom bulk packaging available for institutional buyers or large farms.